feat: update AWS service endpoints metadata

Author: aws-sdk-kotlin-ci

codegen/aws-sdk-codegen/src/main/resources/aws/sdk/kotlin/codegen/endpoints.json

@@ -20404,6 +20404,7 @@
           "ap-southeast-2" : { },
           "ap-southeast-3" : { },
           "ap-southeast-4" : { },
+          "ap-southeast-5" : { },
           "ca-central-1" : {
             "variants" : [ {
               "hostname" : "storagegateway-fips.ca-central-1.amazonaws.com",